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Professional Automotive Repair Technical Discussions for May 31, 2013 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 2000 Buick Park Avenue Ultra 3.8L MIL Lamp on VIN: 1G4CU5419Y Thanks in advance. This car came in for an intake gasket replacement (only leaking oil out of end rails). Repair went well, vehicle runs fine. Now I have an insufficient EGR flow code. You can watch mode 6 data climb every time an egr test is run until the num... Trouble codes: P0401 |
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| 2002 Chevrolet Cavalier 2.2L No Start VIN: 1G1JC52452 Ok this car is KILLING me! Customer said car just died at light. Towed in with spark, compression, but no fuel pressure. Had power at fuel pump pigtail, so we replaced the fuel pump module (complete unit). Didn't start, we assumed it was a defective module, re... |
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| 2008 Chevrolet Impala LT 3.5L column VIN: 2G1WT58K18 There is a very quiet squeeking noise when turning steering wheel - must have windows closed to eliminate engine noise or I can't hear it. Seems like dry rubber bushing/grommet in firewall type noise but this Impala has a long boot over the shaft and I believe... |
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| 2006 GMC Sierra 2500 HD SLT 6.6L No Start, Poor Idle Quality, Stall, MIL Lamp on VIN: 1GTHK23D96 need help. Truck in for tires and oil change and SES. Codes P0128 and P0403. dia current codes need t-stat and reprogram for EGR, replaced tires and did oil change. now sets mass air flow code. Followed flow on all data and led to mass air sensor. Scoped Mass ... Trouble codes: P0102 (Mass Air Flow circuit low voltage) |
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| 2006 Pontiac Montana SV6 3.5L Hesitation, Stall, VIN: 1GMDV33L56 When you are driving down the road.vehicle will stall then the trac control light comes on no codes at the same time the signal lights will not work. After turning ignition switch off the signals will work and tc light goes off |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1990 Buick Century Custom 3.3L No Start, Hesitation, Cuts out, Stall VIN: 1G4AH54N1L Hello, the car is running fine now it was the crank sensor. Thanks to all |
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| 1998 Cadillac DeVille 4.6L Ac VIN: 1G6KD54Y2W Thank you for the replies. My customer had some health issues and could not bring the vehicle in for repair before this post needed to be closed. Customer states that the vents will switch to defrost while driving and stay there. We could not duplicate the pro... |
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| 1988 Chevrolet Camaro Iroc-Z 5.0L Hesitation, Surge, Cuts out VIN: 1G1FP21FXJ Hello. You all probably cant wait to find out what was the problem in this 220HP IROC Z. JK. We covered most of the areas of ignition & fuel injection, vacuum, EGR, sensors etc. We ware about to swap the ECM after conforming all grounds & powers. The car had b... |
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| 1998 Chevrolet C3500 Cheyenne 5.7L Hesitation VIN: 1GBJC34R7W so during testing of all the components the truck started to run fine. i sprayed all of the electrical components under the hood with water to try and make it backfire. didnt seem to have any affect. i worked on it for 8 hrs yesterday and for atleast 5 of them... |
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| 2002 Chevrolet Cavalier LS Sport 2.4L Idle VIN: 1G1JH12T72 Well it did need a new ecm thanks for all the help. All grounds and power were there and put a new emc in and runs fine |
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| 2002 Chevrolet Tracker 2.0L MIL Lamp on VIN: 2CNBJ13C72 Fixed and Gone!!! Crank sensor is located behind the flywheel, behind the shield and under a protective cover. There is a 12" pigtail that snakes its way over the starter motor where it joins the engine harness under the intake.. I ohmed it from the ecm under... Trouble codes: P0335, P0131 (O2 sensor sig low B1S1), P0442 (Evap Small leak). |
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| 2006 Chevrolet Malibu LT 2.2L shifting and speedometer VIN: 1G1ZT51F26 Thanks for all the suggestions guys. It turned out the harness for the oss was touching the outboard cv joint and was shorting it out. Thanks again. |
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| 2009 Chevrolet HHR LT 2.2L MIL Lamp on VIN: 3GNCA23B59 Well it ended up being the intake being bad. There is a hole in the center that sends vacuum up the top cover and we compared the a new intake with the old and the hole was at least 3 times bigger in the old intake put on new intake and it passes all tests th... Trouble codes: P0171 (Lean b1). |
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| 2002 GMC Sonoma SL 4.3L MIL Lamp on VIN: 1GTCT19W22 Folks, I am so sorry for forgetting about this post and not closing it. The truck is fixed and while I don't buy into coincidences, this seems to be the exception. Got another AC Delco sensor and all is well and has been for a while. Truck was here this wee... Trouble codes: P0155. |
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| 2000 Pontiac Grand Prix SE 3.1L Ignition VIN: 1G2WJ52J3Y This vehicle is fixed and gone! Turned out most everyone was right, ignition switch had an intermittent short and the crank sensor on the block would work intermittently. Would these parts just break for good already. Did a wiggle test on the ignition switc... |
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